21 terms

Ecosystems

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Ecosystem
all living and non-living things in an environment
Sun
the original source of energy in an ecosystem
Biotic
living parts of an ecosystem. Example: humans, animals, trees, bacteria
Abiotic
non-living parts of an ecosystem. Example: cloud, rocks, sun, air, minerals
Producer
organisms that produce its own food, using energy from the sun (photosynthesis). Example: plants, algae
Photosynthesis
the process by which plants, algae, and some bacteria use energy from sunlight to make their own food.
Consumer
organism that relies on other organisms for food. They cannont make their own food. Example: fox, wolf, human
Decomposer
organism that gets energy by breaking down nutrients in dead organisms. They break down dead animal and plants. Recyclers because they return nutrients to the soil. Example: earthworms
Scavengers
an animal that feed on the remains of dead animals. The animal eats other animals and plants that are already dead. Example: vulture
Herbivore
an animal that eats only plants. Example: deer, rabbit
Carnivore
an animal that eats only other animals. Example: lion, hawk
Omnivore
an animal that eats both plants and animals. Example: humans, bear
Population
a group of organisms of the same species living in the same place. Example: the number of deer that live in Willow Springs, NC
Community
made up of all the populations that live in the same area. Example: the number of animals (the population of deer, fox, dogs, cats etc..) that live in Willow Springs, NC
Habitat
the physical space used by a population = home. Includes living and non-living parts.
Niche
The role an an organism in its community. The organisms lifestyle. Includes habitat, climate they live in, when and what they eat.
Predator
organism that eats/hunts other organisms in order to live. Example: bear
Prey
a living thing that is hunted for food. Example: fish
Limiting Factors
non-living (abiotic) resources (light, water, soil) that limit the number of organisms in an ecosystem.
Food Chain
the path of energy as it flows from one organism to another. Example: grass - mouse - snake - hawk
Food Web
the overlapping food chains in a community. A diagram that several connects food chains. Example: Arrow follows the path of energy so the arrow points toward the eater